There are different types of lighting, such as wall lighting, down lighting, Ceiling lighting and floodlighting. You might be aware of other lighting methods, but you have very little information on floodlighting. This article provides detailed information on floodlighting technology.
So, what is floodlighting?
Floodlighting refers to the illumination of a target or scene using a floodlight or a spotlight. The illumination of a scene/target is significantly higher than the common ambient illumination.
There is a perception that floodlighting is used for security purposes and to illuminate statues. However, there are other uses of floodlighting, some of which have been discussed below.
1. Night Lighting
Night lighting is the aspect of providing sufficient light at night. Different methods, such as focus lighting, internal lighting, local lighting, and contour lighting, are used for night lighting.
Recently, floodlighting has become the de facto night lighting strategy. It is very useful in focusing illumination into a target. Some of the areas where floodlighting is being used for night lighting include stadiums and street lighting.
2. Architectural Lighting
Different trends in construction and architecture have brought floodlighting into perspective. Floodlighting is currently being used to show the details and essence of the building.
Architectures have been using floodlighting to show the functional characteristics of a building. Other builders have been demonstrating architectural charm and cultural aspects using floodlighting.
Architectural lighting has become a trend of minimizing weaknesses shown in some structures. For example, layering, which is a structural weakness, is eliminated through floodlighting, as shown in the diagram below.
Technology Points in Flood Lighting
As already highlighted above, floodlighting is an important consideration is buildings and major structures. The building or structure, under focus, should not be drowning in the ocean of light.
There should be the considerable and professional installation of floodlights so that the necessary undulating contours and different planes of the structure can be shown. Some of the important aspects to consider include the direction of a floodlight, projection distance, and projection angle.
Some of the technical aspects that should be considered when installing floodlights have been discussed below.
The Use of Color in Flood Lighting
Traditionally, the light color used in architectural night lighting classified as white light and color light, white color incl. cold white light of about 6000k, warm white light of about 4000k, and warm yellow light of 2000~3000k.
The use of color in floodlighting is an additive that has been incorporated to bring the beauty aspect. Sometimes, white light will be replaced with attractive lights that can be seen from far distances.
Green, red, yellow, and blue are some of the common floodlight colors that have been incorporated in various buildings and structures.
· Incident Angle
During the installation of floodlights, it is important to consider the incident angle of light. The primary purpose of the floodlight is to prevent surface imaging. In some circumstances, poor installation of floodlight may make the surface to appear flat.
The angle of incidence helps in adjusting the size of the shadow and the illumination directed to a specific building or structure. In large buildings, the angle of incidence should be 45 degrees. However, in small buildings, the angle of incidence should be greater than 45 degrees, as shown in the diagram below.
The incident angle of the floodlight is also an important aspect when it comes to projection direction. The surface of the structure should focus on shadows in the same direction. Focusing shadows and illumination in the same direction help the overall reflection to be balanced.
You should also make sure that you minimize confusion by eliminating symmetrical aspects, especially at the edges. Increased shadows and symmetries may cause surface fluctuations.
You should also try and control the density of the shadow using the incident angle. It will help you to avoid damaging the integrity of the façade. Using an illumination of 90 degrees plays a vital role in weakening the shadows, as shown in the diagram below.
· Viewing Direction
Viewing direction is an important technical aspect that has to be incorporated every time a floodlight is being installed. For example, the viewing direction should not be the same as the direction of illumination. The angle between the two directions should be between 45 and 60 degrees to avoid direct shadows.
However, it is very difficult to come up with strict viewing directions when it comes to some building like monuments. They have to be viewed from different directions, thereby bringing confusion when it comes to viewing direction and floodlight direction. Nevertheless, it is always important to mind the viewing direction.
Factors affecting Floodlight Illumination
People installing floodlight make considerable mistakes if they are not knowledgeable on how to install such fixtures. If you intend to install floodlights, you should understand the factors affecting illumination as discussed below.
- Location of the Floodlight
There is always an ideal position where a floodlight can be installed to produce the best illumination to a structure. However, finding an ideal position is always difficult, especially in urban areas. Everything necessary should be done to ensure that the floodlight is in the best position possible for optimum illumination.
- Beam Range
The most important factor in illuminating the target is the beam produced by the floodlight. Depending on the position of the floodlight, the beam might be small or larger. The light source, optical system, and positional adjustment are essential aspects in determining beam range.
Therefore, if you want the target to be highly illuminated, you have to make sure that you pay huge attention to the position of the floodlight. You also need to enhance the intensity of light so that you can eliminate all shadows.
- Light Distribution Curve
Many people make the mistake of switching a floodlight, hoping that the target will be highly illuminated. Although the target will be illuminated, there will be no good results due to poor light distribution.
A professional floodlight technician will pay significant attention to light intensity distribution so that much light can be directed to the target. If much of the light is cast into other directions, the target will not be illuminated as intended.
- Number of Floodlights
It is common knowledge that the number of floodlights will affect the illumination of the target. This explains why targets such as stadiums and structures such as monuments have a considerable number of floodlights.
Essentially, the number of floodlights should be sufficient enough to provide sufficient illumination. However, floodlights should be positioned strategically to avoid uneven distribution of light intensity around the target.
- Floodlight Color
This article has discussed the importance of color in floodlight lighting. As we said earlier, color does not address quality but adheres to the beauty aspect that every person wants to see on the target.
Psychologists highlight that different light colors arouse the emotions of individuals. If you want to create an impression on your target, you can use beautiful colors. You can also show the cultural aspects of the building by using different floodlight colors.
The monument below shows some cultural aspects shown through illumination.
Floodlight Glare and how to deal with it?
Besides the many benefits that come from floodlights, there is a big problem that affects thousands of people. Floodlight glare is an inability to see due to light intensity or light reflections emanating from floodlights.
All types of bulbs produce glare. Floodlight glare is characterized and defined through its causes, as discussed below.
· Brightness Glare
The brightness of the floodlight has significant impacts on glare. The brighter the floodlight, the more significant the glare. Therefore, when installing lights, you need to have moderate brightness to minimize or eliminate glare.
· Position of the Floodlight
Position of the floodlight was earlier mentioned as an important factor in floodlight installation. It is also an essential aspect when it comes to glare. The closer the line of sight, the more significant the glare.
· Quantity and Size of Light Source
If you install a very large floodlight, you can be sure that a considerable number of people will struggle with floodlight glare. The same is likely to happen if the quantity of light is too high. Therefore, you have to make sure that you balance the size and light intensity to counter glare.
· The surrounding environment
The darker the ambient brightness, the lower the eye adaptation to the brightness, the more significant the glare
How to Deal with Glare?
· Enhance Floodlight Uniformity
One of the standout strategies of dealing with floodlight glare is enhancing floodlight uniformity. This can be done by ensuring that all the floodlights in a specific location are positioned strategically, thereby ensuring uniform distribution of light.
Uniformity can also be achieved by ensuring that each floodlight produces uniform illumination. The existence of several floodlights producing varying illumination has significant impacts on glare among people.
· Direction of Light
Strategic analysis of light direction is the standout method of dealing with floodlight glare. This method involves directing light in a different direction, thereby avoiding eye contact. For example, illuminating a building bottom-up eliminates glare by 100%.
These are some of the most important aspects you need to understand about floodlights. When you are hiring a lighting company to install floodlights, you need to get a company that understands the aspects discussed above. Additionally, you can incorporate environmental sustainability in your floodlight installation as it has become an important aspect in today’s world.
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